Many years have passed since the Hero restored peace to the land... In a world plagued by the forces of evil, a swordsman and his companions set out to defeat Hadlar, the Dark Lord. On a secluded island in the southern seas, a boy named Dai lives among monsters, longing to become a hero himself one day. Everything changes when the Dark Lord is resurrected. With a new crisis facing the world, Dai makes a promise to his mentor, meets new friends, and gradually learns about his own inevitable fate...

This is the beginning of Dai's adventure and his endeavor to become a true hero!